Development of AlGaAsSb/GaAsSb, high efficiency cascade solar cells. Final report, July 1981-January 1983

Technical Report · Sun May 01 04:00:00 EDT 1983

OSTI ID:5628875

Timmons, M L; Bedair, S M; Markunas, R J; Lamorte, M F

The goal of the program reported has been to develop the technology required to fabricate two-junction, monolithic cascade solar cells with potential conversion efficiencies greater than 30% in an AM2, 400 to 1000 sun environment. The modeling which stimulated the interest in the antimonide cell is described, as are the thermodynamic factors which place fundamental restraints on material growth by liquid phase epitaxy (LPE). A description of the LPE growth is presented for each of the components of the cascade structure. The growth of GaAsSb by organometallic vapor phase epitaxy (OM-VPE) is also described. The experimental results for individually grown components and cascade structures are described, including: dark and illuminated current-voltage characteristics, short-circuit current responses, and fill factor, diffusion length, and efficiency measurements. The cell structure and significant experimental results are also outlined for AlGaAs/GaAs system. (LEW)

• Research Organization: Research Triangle Inst., Research Triangle Park, NC (USA)
• DOE Contract Number: AC02-77CH00178
• OSTI ID: 5628875
• Report Number(s): RTI-1846-02F; ON: DE85013413
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
ALUMINIUM ARSENIDES
ALUMINIUM COMPOUNDS
ANTIMONY COMPOUNDS
ARSENIC COMPOUNDS
ARSENIDES
CASCADE SOLAR CELLS
DIRECT ENERGY CONVERTERS
EPITAXY
EQUIPMENT
FABRICATION
GALLIUM ANTIMONIDES
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
LIQUID PHASE EPITAXY
PERFORMANCE TESTING
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PNICTIDES
SOLAR CELLS
SOLAR EQUIPMENT
TESTING
VAPOR PHASE EPITAXY